WASHINGTON, April 8 (UPI) -- The strike on "senior Iraqi leaders" in the al-Mansour district of Baghdad that targeted Saddam Hussein and one or both of his sons was "extremely effective" but it could be days before the U.S. government knows whether he was killed or injured -- if it ever does. "It is possible that we may never be able to determine exactly who was present without some detailed forensic work, and that's just -- that's one of the circumstances we have to deal with as we go through this campaign," said Brig. Gen. Vincent Brooks, Central Command spokesman,...